EP 2104001 A2 20090923 - Image forming apparatus and positional deviation correction method
Title (en)
Image forming apparatus and positional deviation correction method
Title (de)
Bilderzeugungsvorrichtung und Positionsabweichungskorrekturverfahren
Title (fr)
Appareil de formation d'images et procédé de correction de la déviation positionnelle
Publication
Application
Priority
JP 2008069285 A 20080318
Abstract (en)
A multicolor image forming apparatus includes an exposure unit (8) to direct optical beams for optically writing different single-color images on image carriers (6), respectively, a pattern forming unit (100) to form a positioning pattern (17) on a transport member (2), a pattern detector (14,15,16) to detect the positioning pattern (17), disposed above the transport member (2), a positional data detector (28) disposed on a scanning line to detect positional data in a sub-scanning direction of the optical beams, an adjustment unit (32,33,36,37), and a storage unit (38,39). The adjustment unit (32,33,36,37) detects positional deviations among the different single-color images based on detection results generated by both the pattern detector (14,15,16) and the positional data detector (28), respectively, and then corrects the positional deviations. The storage unit (38) stores as reference data the positional data in the sub-scanning direction of the optical beams detected when the positional deviations are corrected.
IPC 8 full level
G03G 15/01 (2006.01); G03G 15/00 (2006.01)
CPC (source: EP US)
G03G 15/011 (2013.01 - EP US); G03G 15/0131 (2013.01 - EP US); G03G 15/0194 (2013.01 - EP US); G03G 15/50 (2013.01 - EP US); G03G 15/0189 (2013.01 - EP US); G03G 2215/0161 (2013.01 - EP US)
Citation (applicant)
JP 2008069285 A 20080327 - JAPAN ELECTRIC CABLE TECHNOLOG, et al
Designated contracting state (EPC)
DE ES FR GB IT NL
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2104001 A2 20090923; EP 2104001 A3 20141224; CN 101539741 A 20090923; CN 101539741 B 20110831; JP 2009220490 A 20091001; JP 5181753 B2 20130410; US 2009237695 A1 20090924; US 8305637 B2 20121106
DOCDB simple family (application)
EP 09250511 A 20090226; CN 200910128219 A 20090318; JP 2008069285 A 20080318; US 39243709 A 20090225